Don't worry about channels to the best 1Z0-804 Practice Questions Pdf study materials so many exam candidates admire our generosity of offering help for them. Up to now, no one has ever challenged our leading position of this area. The existence of our 1Z0-804 Practice Questions Pdf learning guide is regarded as in favor of your efficiency of passing the exam. So we solemnly promise the users, our products make every effort to provide our users with the latest learning materials. As long as the users choose to purchase our 1Z0-804 Practice Questions Pdf learning material, there is no doubt that he will enjoy the advantages of the most powerful update. All we do and the promises made are in your perspective.
Java and Middleware 1Z0-804 Now IT industry is more and more competitive.
Just come to buy our 1Z0-804 - Java SE 7 Programmer II Exam Practice Questions Pdf learning guide and you will love it. If you are still struggling to prepare for passing Latest 1Z0-804 Questions certification exam, at this moment Omgzlook can help you solve problem. Omgzlook can provide you training materials with good quality to help you pass the exam, then you will become a good Oracle Latest 1Z0-804 Questions certification member.
Free demos are understandable and part of the 1Z0-804 Practice Questions Pdf exam materials as well as the newest information for your practice. And because that our 1Z0-804 Practice Questions Pdf study guide has three versions: the PDF, Software and APP online. So accordingly, we offer three versions of free demos for you to download.
Oracle 1Z0-804 Practice Questions Pdf - As well as our after-sales services.
Omgzlook's Oracle 1Z0-804 Practice Questions Pdf exam training materials are the necessities of each of candidates who participating in the IT certification. With this training material, you can do a full exam preparation. So that you will have the confidence to win the exam. Omgzlook's Oracle 1Z0-804 Practice Questions Pdf exam training materials are highly targeted. Not every training materials on the Internet have such high quality. Only Omgzlook could be so perfect.
Then our experts have carefully summarized all relevant materials of the 1Z0-804 Practice Questions Pdf exam. Also, annual official test is also included.
1Z0-804 PDF DEMO:
QUESTION NO: 1
Given the code fragment:
What is the result?
A.Null B D
B.Null B null D
C.B D
D.D
E.An exception is thrown at runtime
Answer: C
QUESTION NO: 2
Given:
Which two are true?
A.A runtime exception is thrown on line 9.
B.No output is produced.
C.Greeting is printed once.
D.Greeting is printed twice.
E.No new threads of execution are started within the main method.
F.One new thread of execution is started within the main method.
G.Two new threads of execution are started within the main method.
Answer: C,E
Explanation:
Thread t2 is executed. Execution of T2 starts executionen of t1. Greeting is printed during the execution of t1.
QUESTION NO: 3
Given the code fragment:
What is the result?
A.getName (0): C:\
subpath (0, 2): C:\education\report.txt
B.getName(0): C:\ subpth(0, 2): C:\education
C.getName(0): education subpath (0, 2): education\institute
D.getName(0): education subpath(0, 2): education\institute\student
E.getName(0): report.txt subpath(0, 2): insritute\student
Answer: C
Explanation:
Example:
Path path = Paths.get("C:\\home\\joe\\foo");
getName(0)
-> home
subpath(0,2)
Reference: The Java Tutorial, Path Operations
QUESTION NO: 4
Which two properly implement a Singleton pattern?
A.class Singleton {
private static Singleton instance;
private Singleton () {}
public static synchronized Singleton getInstance() {
if (instance == null) {
instance = new Singleton ();
}
return instance;
}
}
B.class Singleton {
private static Singleton instance = new Singleton();
protected Singleton () {}
public static Singleton getInstance () {
return instance;
}
}
C.class Singleton {
Singleton () {}
private static class SingletonHolder {
private static final Singleton INSTANCE = new Singleton ();
}
public static Singleton getInstance () {
return SingletonHolder.INSTANCE; } }
D.enum Singleton {
INSTANCE;
}
Answer: A,D
Explanation:
A: Here the method for getting the reference to the SingleTon object is correct.
B: The constructor should be private
C: The constructor should be private
Note: Java has several design patterns Singleton Pattern being the most commonly used. Java
Singleton pattern belongs to the family of design patterns, that govern the instantiation process. This design pattern proposes that at any time there can only be one instance of a singleton (object) created by the JVM.
The class's default constructor is made private, which prevents the direct instantiation of the object by others (Other Classes). A static modifier is applied to the instance method that returns the object as it then makes this method a class level method that can be accessed without creating an object.
OPTION A == SHOW THE LAZY initialization WITHOUT DOUBLE CHECKED LOCKING TECHNIQUE ,BUT
ITS CORRECT OPTION D == Serialzation and thraead-safety guaranteed and with couple of line of code enum Singleton pattern is best way to create Singleton in Java 5 world.
AND THERE ARE 5 WAY TO CREATE SINGLETON CLASS IN JAVA 1>>LAZY LOADING (initialization)
USING SYCHRONIZATION 2>>CLASS LOADING (initialization) USING private static final Singleton instance = new
Singleton(); 3>>USING ENUM 4>>USING STATIC NESTED CLASS
5>>USING STATIC BLOCK
AND MAKE CONSTRUCTOR PRIVATE IN ALL 5 WAY.
QUESTION NO: 5
Given the code fragment:
What is the result?
A.Java 7
B.Java 6
C.Java 7, Java 6
D.Java 7 java 6
E.Java
Answer: C
Explanation:
regex: Java / one or more anything !!! / ends with a digit so it is the source string
Microsoft AZ-305-KR - Do you feel headache looking at so many IT certification exams and so many exam materials? What should you do? Which materials do you choose? If you don't know how to choose, I choose your best exam materials for you. During the trial process, you can learn about the three modes of EMC D-ISM-FN-23-KR study quiz and whether the presentation and explanation of the topic in EMC D-ISM-FN-23-KR preparation questions is consistent with what you want. EMC D-GAI-F-01 - As long as you want to update the dumps you have, you can get the latest updates within a year. EMC D-PE-FN-23 - Therefore, our Java SE 7 Programmer II Exam guide torrent is attributive to high-efficient learning. So we are sincerely show our profession and efficiency in Microsoft AI-102 exam software to you; we will help you pass Microsoft AI-102 exam with our comprehensive questions and detailed analysis of our dumps; we will win your trust with our better customer service.
Updated: May 28, 2022